Creation of ValidationBox class

This class will be used to make validation boxes below number cards
Graphics Team

Amulya's new operation panel
Graphics Team

Neha's operation panel & workspace
ValidationBox improvements

This commit adds some basic functionality to the validation boxes. One
can now enter text into them, and they will turn green when the text is
entered. Also, cards in the cardpanel have been resized to fit the
boxes.
Bug Fix

Card 6 did not move due to a minor error setting the bounds.
Great job so far!
ValidationBox improvements (sort of)

The validation box now has the ability to turn red or green based on the
number entered. However, there is a bug that is consistintly making the
box turn red. I couldn't quite figure out how to fix, so if anybody
finds something wrong in the code, please tell me.
Fixed validation box colors
Validation box now correctly shows red if the value is not the same as the
card and green if it is
Anuraag's Submenu

Anuraag could not get git working, so I am doing the commit.
Submenu for choosing what type of game (fraction, decimal, integer, ...)
Functionality of choosing fraction, decimal, integer, mixed is needed
Typo
Merge branch 'menu_number-types' into fractions_database
Merged data validation with fractions